Soil tiller



H. SCHULZE.

SOIL TILLER.

` APPLICATION FILED MAY I0, 1921- 1,414,308. Patented Apr. 25, 1922.

4 SHEETS-SHEET I.

v INVENToR. Eff/fiar! o/rz//ze A TTORNEY.

H. SCHULZE.

SOIL TILLER.

APPLICATION FILED MAYIo, 1921.

Patnted Apr. 25, 192,2

4 sums-sum z'.

uns I INVENTOIL Zik/Wa 13C/raz? H. SCHULZE.

son TILLER. APPLICATION FIYLED MAY/10.19.21.

V INVENTOK I XXe/Waff cwa/ze l PatenaApr. 25,- 1922.5

v Hanns-5Min.

Seed bed.

A stantially a U path through the soiltospade UNTED STATES PATENT OFI?!CIS l 'HERMAN SCHULZ/E, 0F NEW .BMUNFELSMTEXASI SQIL I TILLER. f

To all whom it may con-cem:

Be it known thatl I, HERMAN SCHULZE, a citizen of the United States, residing at New Braunfels, in the county of lComal and State of Texas7 have invented new and useful Improvements in Soil Thiers, of which the following is a specification. i y

This invention relates to earth or soil working implements and an object ofthe invention is to provide an implement for More ,specifically the'vinvention comprehends the provision of a soil working imple- Vment which comprises a plurality of vertiv cally movable carrying frames which are reciprocated by operation of crank: shafts, each fof which' pivotally. carries an implement working arm adapted to move in subit and break it` up and also means for yieldf ably maintaining the reciprocatory frames and both arms in position vto permit yielding of theselrnembers 'uponthe striking of theearth. workingto'ol against an obstructionwhich would otherwise break the earth working toolsg,

` jOther'objects of therinvention will appear` in the following detailed description and inV the accompanying drawing wherein :A

Fig. 1 is a side elevation' of the improved soiltiller.. Y Y l Fig. 2 is a top plan of thesoil tiller.

Fig. 3 is a rear elevation `of the soil tiller. Fig. etis a detail cross section taken on the linee-of'Fig. 1. 'Y t Fig. 6 isa detailview of a modified form of the earth working tool.

F ig. 7 is .a' section on theline 7-7 of Referring more particularly to the drawing the improved earthl working implement or soil tiller comprises a chassis 1 `which; is

i951. serialuo. 4683255.

s'pevification of Lettersrfen. Pt'te Q5, l-Z.- Appuation filed May io, f

supportedby any' approved type of front axle 2rand rear axle 3,'whi'ch latter axleis carried by pivotally mounted side frame members e. VTheside frame members l1-are rocked'upon their `pivots. 5 for "adjustingthe elevation o'f the rear axle 3 and the sinii Y porting, wheels 16y carried ctherleby, v by v'adf justment oyf'a: feed screw 7 which threadedly entends through; suitable nuts `Scarriedby the chassis 1 and whiclrhas a head upon yits lower end engaging fone-.of the frame mem bersa as clearly shown, in Fig. lof the drawmg. Ahand wheel- 10 of any approved construction may `be carried bytheupper end of the feed screw 7 vto facilitate manual l operationor adjustment of the feed ,.serew'.

VUpper andlower crank shafts l1v and 12 are rotatably supported by suitable bearing V,nm'mbers '18" and, l14 respectively, they. have relatively -largel gears .15-av and -16 mounted thereon respectively with which a pinion 17 HleShS- .The pinion 17 is mounted =upon a stud shaft 18 carried by the frame structurev 19'V and it carries 'a wormwear 20j with which a worm 21mesh'es.l "Ilie worm 2 1 is mounted upon a drive shaft 22; which is connected to'A an ordinary transmission mechanism lindicated at v23, of theimplement5l whichtrans-`r mission mechanism, may `be driveny `from any suitable type o fprime mover,` such as anl internal "combustion: engine, enclosed with-Y in' the cowl 24, whichmotor also. is utilized for. propelling'thezim'plementr Itis to be understood that any suitable :type `of power transmittingY mechanism,may be utilized in s'or 'lieu of the worm gear201and Worm 21and thespirit of this invention. ,The crank portions 25 of thecranksliaft's 11 and ,12fare' connected byV lbarsl 26-each gearsl, 16 and 17 without departing from of which has its rearredge,v kupper end, andV uppermost portion of its forwarded ere-v ces'sed; as shfown'jatg27yfwhich ,recesse portions receiv'ertherein. portions of recipro,V catory frames 2,8 comprising the relatively long vertijcalsidesl29, bight portions 30,'and v depending Arelatively short. side' portions 31 toY which,-contractileqspiral `springs y32v are connected; The contractile. .spirali lsp'ril'igs 32 are .connectedto suitable brackets 3.30am ried near the lower ends of the barsk26, .and v they yieldably maintain' .the frames() in the recesses 27 formed in the bars-A26, Heads 34:, are yformed upon theflower.` ends of the relatively long sides129gof theV frames28 the implement carrying arms are' .pivotallyl connected asl shown at 36 to the-heads k34.

-The Vlower ends of the arms 35 are substantially T shaped andl providing transverse portions 36 to which the earth working tools 37 are detachably connected as shown at 38. The tools 37'may be composed of a plurality of prongs 40, as shown in F ig.

3 of the drawing, whichprongs are curved to present forward convex sides and rearward concave sides, the said convex and concave surfaces merging at the lower ends of the tools into the sharpened edges. If

= it is so desired, spade like tools, such las illusparting from the spirit of this invention.

The arms project above the pivots 36y for the' major portion ofthe length of the sides 29 of the frames 28 and expansible spiral lsprings 42 are supported and engage the upper ends of these arms for yieldably maintaining the arms against their respective lrframes 28, however, the springs 42 are adapted to yield toV permitfyieldable movement ofthe arm or beam 35 ywith which they are assooiatedwhen,y a solid object is engaged by the tool 37 while passing backwards throughv the soil and the springs32 permit yielding movement of the frame'28 relativeto its carrying bar 26 when a foreign or solid object is' engaged by 'the tool during its downward motion into the soil, these yieldable break movements preventing breaking of the tools when engaging solid objects during preparation of a seed bed.

During operation, Athe rotation of the crank shafts 1l and 12 will move'the tools 37fdownwardly into the ground, rearwardly andupwardly yin a substantially U pathfas l show-nat 44 in Fig'. l of the drawing, spading and breaking up the soil as the imple nient'l travels tliereover. Scrapers 45 are carried bythe lchassis l and vare lpositioned for scraping the concave surfaces of the tools 37 during their upward 'inactive movement :for removing soil therefrom which might adhere to the blades during their spading operation. y d Y l l I'The 'springs 42 i are Vsupported by suitable carrying rods 46`which are anchored in thel frainesf'28 and extend through suitable openings inthe 'arms 35, `havingtheir inner ends engaging arms 35V whilej their outer ends engage washers :mounted on the'rods 46.

The adjustment of the pivoted frame membersy 4I andfconsequently"of the feed Vscrew-7,y the wheel 6 maybeoperatedat such an "elevation, relative Vtothe chassis l, that theft-cols '37Y will y'not'enter the ground or soil lat allgsuch 'position beingvdesired durtransportation 'of A'the A soil tillei'or the implement to andffrom afield'.

It, is ofcourse, to be understood that the 'invention mayv be constructed in, various other manners andY the parts associated inLV different relations and, therefore, I do not JHaving thusdescribed my invention what l claim is: Y

l. ln a soil tiller, a pairof crank shafts,

means for rotating said crank shafts, bars connecting said crank shafts, frames-slidfr ably supported by said bars, yieldable-ineans maintaining saidfraiiics in engagement with said bars and for movement with the bars, and earth working tools carried by' said frames. i i i 2. in' a soil tiller, Ia plurality Vof bars, means for rnoving said bars, frames slidably supported by said bars,yieldable means ...taining-:said frames in engagement with aid bars for movementv with the bars, and aitli working tools Carried by said frames.

ina soil til-ler, a bai', means formov ing said bar in a substantially oval path, frame slidably carried byvv said .bar yield` anic n'ieaiis maintaining said frame inoperein c f ative engagement with said bar, an arm piv i frame slidably 'carried by said kbar yieldable i means maintaining saidframe inoperative engagement with said bar, an arm pivotally carried by said frame, an e'arth'workingv tool carried by l"said bar, and fiiieansfo'r yield# V in engagement ably' maintaining said arm with said jf'ramf'e. p I

.lii a soil tiller, a bar, lmeans vfor movj ing said bar in substantially oval path, a. lrain'e carriedby said bar'yieldable means` niaintain'ii'ig said frame' inoperative engage nient witli'fsaidbar, an arm Vpivotally carried; l by said frame," an earthworkingtool'carriedl by said bar, means for vyieldabrly':maintain` Y ing said arm iii lengagement withr'saidframe, and a scraper positioned for engagingI said earth working tool during a part'of its upward movement. .f

Y e. in a .S0-ii iiiiei, 'a pair of (iraniennes,

means forvrotating said crank shafts-'bars .Y

conneclftingv said crank shafts, frames slidblyy supported by said bars, yieldable means maintaining.said'frames in engagement with said bars and for movement-'with bars, earth working tools carried 'by said frames, 'and a scraper positioned for engaging saidearth workingtools during' a part' ofl their movement. y Y f l7. In asoil tiller the combination with a motor driven lchassis of -a pair lolf-"crank sh carried thereby, of a'{ luralityv of bars connecting Ysaid crankshafts, rotationxof said c crank' shafts adapted to move said barsy in iioY motor driven chassis, of a plurality of barsv Carried thereby, means for moving saidbars in a substantially oval path, means operated by said motor for operating said bar moving means, frames carried by'said bars and movable therewith, said frames mounted for. movement relative to said bars,A yieldable means maintaining said frames in engage'- ment with said bars, armspivotally carried by said trames, earth Working tools carried; by said arms, and yieldable .means normally Y maintaining said arms against movement relative to said frames.

9,. In a soil tiller the combination with a motor driven chassis, of a plurality of'bars carried thereby, means for moving said bars in a substantially oval path, means operated Y by said motor for operating said bar moving means, frames carried by said barsand movable therewith, said frames mounted for movement relative to said bars, yieldable 1 means maintaining said frames'in engageengaging said earth Workingtools during ment with said bars, armspivotally carriedv by said frames, earthl Working tools carried by. said" arms, yieldable means normally maintaining said arms` against movement relative Vto 'saidr'ameaf and: Scrapers for,

a portion of their' movement,

l0. Ina. soiltiller'a bar, means for mov- Y, ing'said bar in 'a'sub'stantially Aoval path, a'

a lrame slidably carriedby said bar, yieldable' means 'maintaining said frame inoperative engagement withsaid bar,lan arm pivotallyO carried bysaid bai', and yieldable means nor. mallykmaintaining said arm against movement relative to said trame.v n y V1 1. ln a soil tiller,'apair of crank shafts,

means for rotating saidv crank shafts, bars vconnecting:said crank shafts, -iframes slid`l l ably supported by said bars, `glidable means maintaining said frames in engagement with said bars and for movement With the-bars,

arms pivotally carried by; said frames'earth .A

working tools carried by said arms, 'and yieldable means' normallyfmaintaining said 'arms against movementrelative to' said frames.

In testimonyfwhereo .Ivaizri my signature. ,y

y nnaimia s oHULZE. 

